Reply to How do greatschools ratings work?

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Reply to "How do greatschools ratings work?"

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[quote=Anonymous]"Just to clarify, if one school has more top students scoring higher but not as many total students passing, it would be rated lower than a school that has a 90% pass rate."

To the PP -- basically yes.  The ranking is based on how many kids pass without regard to how far above the state average the "top students" scored or how far below the state average the lower students scored.

If the school had 25 kids pass the math test with perfect scores (600) and 50 kids pass at the cutoff for "passing" (i.e. 400) and 25 kids fail (doesn't matter if their average scores were 399 or 100 for this example).... then the pass rate for this school is 75%.  It doesn't matter what the actual scores were.  The pass rate is not weighted by the actual scores.  The Great Schools ranking is just comparing the pass rate of 75% with the state average for that grade/subject.

If another school has 90% of the kids passing with a 400, and 10% failing (again, it doesn't matter if they failed with a score of 399 or 50)---  that school would have an average pass rate of 90%.  It would rank MUCH higher on Great Schools compared to the preceding school where 25% were really high, 50% were med. and 25% were low.  It's really all about the percentage of kids that failed and comparing that to schools around the state.[/quote]

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